People wearing face masks hold shopping bags as they walk under a giant screen showing a news footage of Chinese President Xi Jinping during a meeting, at a shopping area in Beijing, China July 31, 2020. REUTERS/Tingshu Wang/File Photo Acquire Licensing Rights BEIJING, Aug 17 (Reuters) - With China at risk of tipping into prolonged stagnation and a spiralling property crisis threatening financial stability, there is growing unease over why its leaders are not rushing to revive the world's second-largest economy. Even in a country known for opaque and drawn-out decision making, investors, analysts and diplomats are pointing to signs...